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Arianism
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Arianism Article

Arianism summary

Know about the beliefs of Arianism and its condemnation by the Council of Nicaea

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Below is the article summary. For the full article, see Arianism.
Liberale da Verona: Jesus Before the Gates of Jerusalem
Liberale da Verona: Jesus Before the Gates of JerusalemJesus Before the Gates of Jerusalem, manuscript illumination by Liberale da Verona, 1470–74; in the Piccolomini Library, Siena, Italy.

Arianism, Christian heresy that declared that Christ is not truly divine but a created being. According to the Alexandrian presbyter Arius (4th century), God alone is immutable and self-existent, and the Son is not God but a creature with a beginning. The Council of Nicaea (ad 325) condemned Arius and declared the Son to be “of one substance with the father.” Arianism had numerous defenders for the next 50 years but eventually collapsed when the Christian emperors of Rome Gratian and Theodosius assumed power. The First Council of Constantinople (381) approved the Nicene Creed and proscribed Arianism. The heresy continued among the Germanic tribes through the 7th century, and similar beliefs are held in the present day by the Jehovah’s Witnesses and by some adherents of Unitarianism.

St. Gregory of Nyssa
Saint Gregory of Nyssa Summary
Saint Gregory of Nyssa ; feast day March 9) was a philosophical theologian and mystic, leader of the orthodox party in the 4th-century Christian controversies over the doctrine of the Trinity. Primarily a scholar, he wrote many theological, mystical, and monastic works in which he balanced Platonic
Theodosius I
Theodosius I Summary
Theodosius I was a Roman emperor of the East (379–392) and then sole emperor of both East and West (392–395), who, in vigorous suppression of paganism and Arianism, established the creed of the Council of Nicaea (325) as the universal norm for Christian orthodoxy and directed the convening of the